Source data is broken

[anuveyatsu]

GitHub actions was broken for ~18 months now. Although, I cannot see the logs anymore I can assume it is because the source data is unavailable:

https://data.egov.kz/datasets/view?index=kazakstan_respublikasy_halkyny1

Downloading data returns 404.

Since the official data source is unstable, we could use some alternative source:

• wikipedia - provides total population for county from 1950 (which is great) but doesn't provide data by region and sex (only charts without raw data but maybe need to dig deeper to find out the source.
• https://gender.stat.gov.kz/file/Kazakhstaninfigures.pdf - if we could convert this PDF into CSV tables, it would be awesome

[anuveyatsu]

Previous source is now archived and not updated. The new source is here: https://data.egov.kz/datasets/view?index=population_of_the_republic_of_

also check this out: https://data.egov.kz/datasets/view?index=number_of_children_under_the_a

cc @Mikanebu @RaySoul02